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/* $Id: util.h,v 1.6.2.2 2002/01/18 08:31:12 m-kasahr Exp $ */
/*
* Copyright (c) 2000 Japan Network Information Center. All rights reserved.
*
* By using this file, you agree to the terms and conditions set forth bellow.
*
* LICENSE TERMS AND CONDITIONS
*
* The following License Terms and Conditions apply, unless a different
* license is obtained from Japan Network Information Center ("JPNIC"),
* a Japanese association, Kokusai-Kougyou-Kanda Bldg 6F, 2-3-4 Uchi-Kanda,
* Chiyoda-ku, Tokyo 101-0047, Japan.
*
* 1. Use, Modification and Redistribution (including distribution of any
* modified or derived work) in source and/or binary forms is permitted
* under this License Terms and Conditions.
*
* 2. Redistribution of source code must retain the copyright notices as they
* appear in each source code file, this License Terms and Conditions.
*
* 3. Redistribution in binary form must reproduce the Copyright Notice,
* this License Terms and Conditions, in the documentation and/or other
* materials provided with the distribution. For the purposes of binary
* distribution the "Copyright Notice" refers to the following language:
* "Copyright (c) Japan Network Information Center. All rights reserved."
*
* 4. Neither the name of JPNIC may be used to endorse or promote products
* derived from this Software without specific prior written approval of
* JPNIC.
*
* 5. Disclaimer/Limitation of Liability: THIS SOFTWARE IS PROVIDED BY JPNIC
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JPNIC BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* 6. Indemnification by Licensee
* Any person or entities using and/or redistributing this Software under
* this License Terms and Conditions shall defend indemnify and hold
* harmless JPNIC from and against any and all judgements damages,
* expenses, settlement liabilities, cost and other liabilities of any
* kind as a result of use and redistribution of this Software or any
* claim, suite, action, litigation or proceeding by any third party
* arising out of or relates to this License Terms and Conditions.
*
* 7. Governing Law, Jurisdiction and Venue
* This License Terms and Conditions shall be governed by and and
* construed in accordance with the law of Japan. Any person or entities
* using and/or redistributing this Software under this License Terms and
* Conditions hereby agrees and consent to the personal and exclusive
* jurisdiction and venue of Tokyo District Court of Japan.
*/
#ifndef MDN_UTIL_H
#define MDN_UTIL_H 1
/*
* Utility functions.
*/
/*
* Case-insensitive string match.
*
* This function compares two strings in case-insensitive way, like
* strcasencmp() function which can be found in many systems.
* However, this function only disregards the case difference of ASCII
* letters ([A-Za-z]), so it is locale independent.
* The result is 1 if 's1' and 's2' match, 0 otherwise.
*/
extern int
mdn_util_casematch(const char *s1, const char *s2, size_t n);
/*
* Get a range of valid domain name characters.
*
* This function sees each character in string 's' until 'end',
* and checks if it is valid as a character in ASCII domain names.
* It returns a pointer to the first invalid character, or 'end'
* if all characters are valid.
*/
extern const char *
mdn_util_domainspan(const char *s, const char *end);
/*
* Test whether a string is valid domain name defined by STD 13.
*
* This function sees each character in string 's' until 'end', and
* checks if the string is valid as an ASCII domain name that STD 13
* defines. If valid, it returns 1. Otherwise, it returns 0.
*/
extern int
mdn_util_validstd13(const char *s, const char *end);
/*
* Test whether a string contains non-LDH ASCII code points
* (U+0020 ... U+007E).
*
* This function sees each character in string 's' until 'end'.
* If non-LDH code point (U+0020 ... U+007E) is found, it returns 1.
* Otherwise, it returns 0.
*/
extern int
mdn_util_havenonldhascii(const char *s, const char *end);
/*
* UTF-8 to UTF-16 conversion and vice versa.
*/
extern mdn_result_t
mdn_util_utf8toutf16(const char *utf8, size_t fromlen,
unsigned short *utf16, size_t tolen, size_t *reslenp);
extern mdn_result_t
mdn_util_utf16toutf8(const unsigned short *utf16, size_t fromlen,
char *utf8, size_t tolen, size_t *reslenp);
#endif /* MDN_UTIL_H */
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